Hello, @pcentauri92
Thanks for your reply.
For adding AES encryption on your own application based on Linux BSP, assuming it is a Linux user space application, it could take use of libhse that provided by the BSP.
I suggest reading the following document/resource for your reference.
1. BSP UM, I suggest using a newer BSP like BSP42/43, the document could be get from your NXP account in BSP binary downloading page.
2. https://github.com/nxp-auto-linux/pkcs11-hse, this is the user space library for accessing the HSE from Linux user space, there is no document in this lib, but example code existed for hse encryption from Linux user space.
I hope it will help.
BR
Chenyin